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Double seal with getter in flexible organic displays

A light-emitting display, flexible technology, applied in the direction of organic light-emitting devices, organic semiconductor devices, organic light-emitting device parameters, etc., can solve problems such as gas leakage, achieve the effects of reducing tension, reducing risks, and increasing structural strength

Inactive Publication Date: 2006-07-19
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rigid seals for flexible displays thus lead to gas leakage due to delamination of the substrate and rupture of the sealing material using existing technologies

Method used

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  • Double seal with getter in flexible organic displays
  • Double seal with getter in flexible organic displays
  • Double seal with getter in flexible organic displays

Examples

Experimental program
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Embodiment Construction

[0023] FIG. 1 shows a cross section of a rigid prior art display 100 . The display comprises a backplane 101 on which an organic light emitting polymer 104 is arranged between an anode 103 and a cathode 105 . The metal back cover 102 is separated from the backplane by means of a seal 107, thereby forming a closed display unit. Finally, a getter 108 is provided on the metal cover 102 inside the display unit. In Figure 1 and the following figures, the thickness of these seals is exaggerated for clarity. In a typical display device, the substrate may eg be about 0.1 mm thick and the seal may be about 0.01 mm, whereby the seal is substantially thinner than the substrate.

[0024] figure 2 A cross-section of a flexible display 200 of the present invention is shown having an outer sealing portion 207 and an inner sealing portion 206 encapsulating the display unit. Both the backplane 201 and cover substrate 202 are formed out of a flexible material, such as polycarbonate or polye...

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PUM

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Abstract

Improved seal for flexible organic light emitting displays are provided. For the purpose of the present invention it is realisd that a homogenous seal cannot provide for the combination of resuired robusness and required impermeability, which are essential for the life time of the display. Therefore, a seal comprising an inner seal portion and an outer seal portion is proposed. The outer seal portion is flexible as compared to the inner seal portion and the inner seal portion is impermeable as compared to the outer seal portion and being deposited between the outer seal portion and the display element.

Description

technical field [0001] The present invention relates to flexible organic displays. Background technique [0002] Flexible displays are a big challenge for the new market. Basically, flexible displays can be fabricated using known display elements, such as liquid crystal display (LCD) elements or organic light emitting display (OLED) elements, deposited on a flexible substrate, eg a polymer substrate. For example, Philips has demonstrated flexible displays based on liquid crystal materials. The use of light-emitting polymers offers the benefits of excellent viewing angles, contrast and low power consumption. Flexible passive-matrix monochrome organic light-emitting displays (OLEDs) have been demonstrated by US and Far East companies such as Pioneer, Dai Nippon, UDC, and DuPont Displays. [0003] Typically, OLEDs include an organic display element deposited on a base glass substrate and covered by an exit substrate. One of the key issues with organic light emitting devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/10H01L51/52
CPCH01L2251/5338H01L51/5246H01L2251/55H10K50/8426H10K2101/00H10K2102/311H05B33/04H10K10/80
Inventor E·A·W·G·詹斯森M·迪克瓦格H·朱伊德马E·范维南G·尼萨托C·A·H·A·穆萨尔斯O·J·A·布伊克P·C·P·博坦
Owner KONINK PHILIPS ELECTRONICS NV
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